In the mid-1980s, Rezaei became involved in secret contacts with the United States during the Iran-Contra affair, in which Iran received American weapons while proceeds from the arms sales were diverted to support the Contra rebels in Nicaragua.

Former Iranian President Akbar Hashemi Rafsanjani once told local media that his nephew, Ali Hashemi, a key intermediary in contacts with the administration of then-US President Ronald Reagan, had informed him and, subsequently, Rezaei about meetings with American officials.